Self healing injection ports

Make professional mushroom growing containers out of jars or buckets!

These self healing injection ports allow you to insert a syringe into the container without risking to contaminate it. The bytyl rubber heals right up after you remove the needle. Nifty huh?

Drill a 13 mm hole in the lid of the container you want to use, slap some high temperature silicone on the corners of the injection port (optional) and you are ready to go.

Now go make some jars!
5 pcs (13 mm)